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Advances in Microwave Photonics

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 3690

Special Issue Editors

Dr. Chao Wang

E-Mail Website
Guest Editor
School of Engineering, University of Kent, Canterbury CT2 7NT, UK
Interests: microwave photonics; optical communications and biophotonics; for widespread industrial; communications; biomedical; defense applications
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yang Chen

E-Mail Website
Guest Editor
1. Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, China
2. Engineering Center of SHMEC for Space Information and GNSS, East China Normal University, Shanghai 200241, China
Interests: microwave photonics; optoelectronic oscillators; radio-over-fiber techniques; optical communications
Prof. Dr. Jiejun Zhang

E-Mail Website
Guest Editor
Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511443, China
Interests: microwave photonics; integrated photonics; optical communications

Special Issue Information

Dear Colleagues,

Microwave photonics is an interdisciplinary field that explores the interactions between microwave and optical signals, which aims to leverage the unique properties of photonics, such as their high speed, broad bandwidth, and low transmission loss, to enable novel solutions in microwave systems. Over the past few decades, microwave photonics has achieved significant progress, enabling a wide range of applications in fields such as radar, sensing, instrumentation, and telecommunications.

This Special Issue aims to highlight the latest advancements in microwave photonics. Submissions of both original research papers and review articles are welcome. Technical topics of interest include, but not limited to, the following areas:

  • Microwave photonics for sensing and measurement;
  • Microwave photonic radar for target sensing;
  • High-speed optoelectronic devices for sensing and measurements;
  • Optoelectronic oscillators;
  • Photonic processing of microwave signals;
  • Photonic generation of arbitrary waveforms;
  • Integrated microwave photonics;
  • Radio over fiber for B5G/6G and IoT;
  • THz photonics;
  • AI in microwave photonics.

Dr. Chao Wang
Prof. Dr. Yang Chen
Prof. Dr. Jiejun Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microwave photonics
  • sensing
  • radar
  • optoelectronic devices
  • optoelectronic oscillators
  • arbitrary waveform generation
  • photonic signal processing
  • integrated microwave photonics
  • radio over fiber
  • THz photonics
  • AI in microwave photonics

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Published Papers (2 papers)

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11 pages, 4983 KiB  
Article
High-Sensitivity Magnetic Field Sensor Based on an Optoelectronic Oscillator with a Mach–Zehnder Interferometer
by Mingjian Zhu, Pufeng Gao, Shiyi Cai, Naihan Zhang, Beilei Wu, Yan Liu, Bin Yin and Muguang Wang
Sensors 2025, 25(5), 1621; https://doi.org/10.3390/s25051621 - 6 Mar 2025
Viewed by 525
Abstract
A high-sensitivity magnetic field sensor based on an optoelectronic oscillator (OEO) with a Mach–Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The magnetic field sensor consists of a fiber Mach–Zehnder interferometer, with the lower arm of the interferometer wound around a magnetostrictive transducer. [...] Read more.
A high-sensitivity magnetic field sensor based on an optoelectronic oscillator (OEO) with a Mach–Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The magnetic field sensor consists of a fiber Mach–Zehnder interferometer, with the lower arm of the interferometer wound around a magnetostrictive transducer. Due to the magnetostrictive effect, an optical phase shift induced by magnetic field variation is generated between two orthogonal light waves transmitted in the upper and lower arms of the MZI. The polarization-dependent property of a Mach–Zehnder modulator (MZM) is utilized to transform the magnetostrictive phase shift into the phase difference between the sidebands and optical carrier, which is mapped to the oscillating frequency upon the completion of an OEO loop. High-sensitivity magnetic field sensing is achieved by observing the frequency shift of the radio frequency (RF) signal. Temperature-induced cross-sensitivity is mitigated through precise length matching of the MZI arms. In the experiment, the high magnetic field sensitivity of 6.824 MHz/mT with a range of 25 mT to 25.3 mT is achieved and the sensing accuracy measured by an electrical spectrum analyzer (ESA) at “maxhold” mode is 0.002 mT. The proposed sensing structure has excellent magnetic field detection performance and provides a solution for temperature-insensitive magnetic field detection, which would have broad application prospects. Full article
(This article belongs to the Special Issue Advances in Microwave Photonics)
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14 pages, 4762 KiB  
Article
Trigger-Free and Low-Cross-Sensitivity Displacement Sensing System Using a Wavelength-Swept Laser and a Cascaded Balloon-like Interferometer
by Jianming Zhou, Jinying Fan, Junkai Zhang, Jianping Yao and Jiejun Zhang
Sensors 2025, 25(3), 750; https://doi.org/10.3390/s25030750 - 26 Jan 2025
Viewed by 2501
Abstract
A wavelength-swept laser (WSL) demodulation system offers a unique time-domain analysis solution for high-sensitivity optical fiber sensors, providing a high-resolution and high-speed method compared to optical spectrum analysis. However, most traditional WSL-demodulated sensing systems require a synchronous trigger signal or an additional optical [...] Read more.
A wavelength-swept laser (WSL) demodulation system offers a unique time-domain analysis solution for high-sensitivity optical fiber sensors, providing a high-resolution and high-speed method compared to optical spectrum analysis. However, most traditional WSL-demodulated sensing systems require a synchronous trigger signal or an additional optical dispersion link for sensing analysis and typically use a fiber Bragg grating (FBG) as the sensing unit, which limits displacement sensitivity and increases fabrication costs. We present a novel displacement sensing system that combines a trigger-free WSL demodulation method with a cascaded balloon-like interferometer, featuring a simple structure, high sensitivity, and low temperature cross-sensitivity. The sensor is implemented by bending a short length of single-mode fiber with an optimal radius of around 4 mm to excite cladding modes, which form an interference spectral response with the core mode. Experimental findings reveal that the system achieves a high sensitivity of 397.6 pm/μm for displacement variation, corresponding to 19.88 ms/μm when demodulated using a WSL with a sweeping speed of 20 nm/s. At the same time, the temperature cross-sensitivity is as low as 5 pm/°C or 0.25 ms/°C, making it a strong candidate for displacement sensing in harsh environments with significant temperature interference. Full article
(This article belongs to the Special Issue Advances in Microwave Photonics)
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